im not dishn ya or anything but whats your growing experince if you have several years of sucessful growing experince your questions would be answered by your experince. 20k is alot of lighting and yield potentional and to be sucessful would take dedication for what 500-700 plants easy. i have 30 under a 1k hps that require alot of dedication so times my 30 plants under 1 light by your 20 lights =600 plants approx. lotsa work way to much for this oleman lmaoondalow said:i got 3300 square feet and i want to know would it be cool to put 20 1000 watt lights up and could somebody give me and idea on how to use the space wisely and what would be the most efficent way to cool every thing down
The American said:If you ever get to the electrical part,wire your fixtures for 240V.You cant do 20 1K fixtures with a 200A service at 120V,but you can at 240V.